| 摘要 |
<p>PURPOSE:To discharge two paper sheets to an after-treatment plate synchronously, and prevent the paper folding or the like in a sheet after-treatment device for copying machine or the like by dividing a carrying passage into a main passage and a bypass on the way thereof with a switching means, and feeding a first sheet to the main passage and feeding a second sheet to the bypass, and controlling the carrying/stop of a carrying roller of the main passage. CONSTITUTION:An after-treatment carrying passage 41 is divided into a bypass 41b and a main passage 41c, and a route switching means 44 is provided at the branch point. The main passage 41c and the bypass 41b are respectively provided with carrying rollers 42, 43 and sheet detecting switches SW1, SW2. At the time of after-treatment mode, a first image forming paper sheet is passed through the main passage 41c turn on/off the switch SW2. The switching means 44 is thereby switched to the bypass 41b side to feed a second sheet to the bypass 41b. Carrying/stop of the carrying roller 43 of the main passage 41c is controlled to discharge the first and the second sheets synchronously.</p> |
